| Challenger - Ottignies | 01/23 11:00 | 14 | Heyman, Christopher v Tibo Colson | 3-6,6-7 | |
| UTR Pro Tennis Series Mulheim | 10/09 09:00 | - | Yanais Laurent v Heyman, Christopher | 3-6,2-6 | |
| UTR Pro Tennis Series Mulheim | 10/08 10:30 | - | Sidane Pontjodikromo v Heyman, Christopher | 3-6,4-5 | |
| UTR Pro Tennis Series Mulheim | 10/06 09:00 | - | Heyman, Christopher v Niels Visker | 6-3,6-3 | |
| UTR Pro Tennis Series Mulheim | 10/05 06:00 | - | Heyman, Christopher v Tadija Radovanovic | 6-4,6-4 | |
| UTR Pro Tennis Series Mulheim | 10/04 07:30 | - | Heyman, Christopher v Oscar Galimardanov | 7-6,7-5 | |
| UTR Pro Tennis Series Mulheim | 10/03 11:30 | - | Heyman, Christopher v Pepijn Bastiaansen | 6-0,6-1 | |
| ITF M15 Lodz | 07/28 10:25 | 26 | Kristjan Tamm v Heyman, Christopher | 6-4,6-2 | |
| ITF M15 Lodz | 07/27 12:45 | 25 | Adrien Gobat v Heyman, Christopher | 1-6,3-6 | |
| Rome, USA | 07/10 14:00 | 14 | Heyman, Christopher v Cernoch, Brian | Cancelled | |
| ITF M25 Marburg | 07/07 09:15 | 26 | Heyman, Christopher v Sidane Pontjodikromo | 5-7,4-6 | |
| ITF M25 Marburg | 07/06 08:00 | 25 | Heyman, Christopher v Philip Sekulic | Retired | |
| ITF M25 Den Haag | 07/01 11:00 | 27 | Michiel de Krom v Heyman, Christopher | 4-6,6-4,7-5 | |
| ITF M25 Den Haag | 06/30 12:45 | 26 | Rojas, O. v Heyman, Christopher | 3-6,4-6 | |
| ITF M25 Den Haag | 06/29 10:00 | 25 | Jip Van Assendelft v Heyman, Christopher | 7-6,2-6,1-6 | |
| ITF M25 Arlon | 06/22 08:00 | 25 | [440] Heyman, Christopher v Kai Wehnelt [333] | 3-6,2-6 | |
| ITF M15 Duffel | 06/17 08:55 | 27 | Chris Rodesch v Heyman, Christopher | 6-4,6-3 | |
| ITF M15 Duffel | 06/16 08:00 | 26 | [460] Sandkaulen, Tim v Heyman, Christopher [483] | 2-6,7-6,1-6 | |
| ITF M15 Duffel | 06/14 14:20 | 25 | Harold Huens v Heyman, Christopher | 2-6,3-6 | |
| ITF M15 Budva | 06/12 09:00 | 29 | [484] Heyman, Christopher v Damien Wenger [455] | 4-6,6-3,6-1 | |
| ITF M15 Budva | 06/11 12:30 | 28 | Heyman, Christopher v Claverie, Lorenzo | 6-2,6-1 | |
| ITF M15 Budva | 06/11 08:30 | 27 | Heyman, Christopher v Gabriel Donev | 7-5,6-3 | |
| ITF M15 Budva | 06/10 10:10 | 26 | Heyman, Christopher v Simon Beaupain | Walkover | |
| ITF M15 Budva | 06/08 14:50 | 25 | [484] Heyman, Christopher v Neil Oberleitner [275] | 6-4,6-1 | |
| Challenger - Francavilla | 05/17 14:10 | 25 | [483] Cias, Pawel v Heyman, Christopher [443] | 6-1,6-2 | |
| Challenger Heilbronn | 05/08 13:30 | 14 | [261] Jonas Forejtek v Heyman, Christopher [449] | 7-6,6-1 | |
| ITF - M15 Meerbusch | 05/05 12:15 | 26 | Robin Bertrand v Heyman, Christopher | 7-6,6-4 | |
| ITF - M15 Meerbusch | 05/04 15:30 | 25 | [485] Jaime Faria v Heyman, Christopher [449] | 6-3,4-6,3-6 | |
| Split, Singles M-ITF-CRO-05A | 04/29 12:20 | 27 | [413] Heyman, Christopher v Rudolf Molleker [463] | 4-6,4-6 | |
| Split, Singles M-ITF-CRO-05A | 04/28 11:50 | 26 | Heyman, Christopher v Robin Bertrand | 6-3,7-6 |